Registering mechanism



March 2 1926. 1,575,326

O. C. FROM REGISTERING MECHANISM Filed oct. 18, 1923 2 Sheets-Sheet 1 ,Yu. xk W `Q\\\ b* fm v 4W p v W WV S H -w .n M v W .GV i l W L# 0f@ ILL Jh p M@ NS h h ,W m; A v v u v v L L bv n l L AN; Hill .l.l QS QS l? G EE B IINWNI n s wm- S :twg n l n r n r \M\ .Ml

March 2 1926.

O. C. FROM REGISTERING MECHANISM Fi'led O'Gt. 18-, 1923 2 Sheets-Sheet 2Patented Mar. 2, 1926.

unire-n sirares PATENT Geelen.

Application filed` Octohen 18, 1923. Serial No. 669,252.,

Fb cZZ`wLom itmay concern:

Be it known that I, OWEN C. FROM., a citi zen of the United States oi'America,.residing at New York, in the county of New York, State of NewYork, have invented certain new and useful` Improvements in RegisteringMechanisms, of which the tollowing is a full, clear, concise, and exactdescription.

This invention relates to telephone exchange systems, and" moreparticuiarly, to recording and registering mechanisms4 tor use therein.

In telephone systems ofthe automatic and semi-automatic types, it isfound desirable tov register on! apparatus located at the centraloiiicethe designations of wanted lines or circuits. A designati.on` thusregistered may later be used for governing the selective operations ofswitches to extend the required connection or orcontrbiling welllinownindicating mechanism.4

The ohject of the invention is to provide a unitary registeringmechanism ot' simple construction' and' eiiicient in operation forregistering all" digits of called designations.

A feature of' the invention relates to the provision of aregisteringmechanism oi the coordinate switch type, the verticali` barsof which are operated inw different combinations in response to eachseries oi' impulses and' the horizontal. bars of which: are operated'`in succession in response toA aprogressive series of impulses to ope ateregistering elements. forV recording the digit values of' the several'digits of" call designations.y s

further feature of the invention relates to the provision ini a unita-ryregistering mechanism ofA a group ofregisteringA elements for eachseries of impulses. to be reg-4 istered and of means; for operating saidelements in various combinations to translate digit values of a decimalcharacter into registrations'of a non--decimall or code cha-racter.

This andi other features oi'- the invention will be more clearlyapparent from: a consideration of' the fr illowingl description taken inconnectionA with theA accompanying drawings and` the appended claims.

lteierrii'1g` to thedrawings, Figs. i and 2, taken in conjunction witheach other, with Fig; 2 at the right of Fig. l, illustrate so` much of atelephone exchange system incorn porating a receiving, recording andregistering mechanism. oi' a type embodying. the present invention as isnecessary tor a complete understanding thereof. Fig. l' discloses asub'scriberjs line terminating in a switch at the central office,otlierswitches for extending the line, together with details of animpulsereceiving and recording mechanism responsive to designationimpulses for establishing the record: thereof at the central oiice.

Fig.4 2' shows a unitary registering mechanism of the coordinate typecomprising' eight groups of registering elements' corresponding'to eightdigits oa called designation, the four vertical' bar magnets in: the

'lower portion oi the figure, the eigl'it horizontal bar magnets at theimmediatev leit of the several groups otregistering elements and a chainof progression rela-ys on the left of the horizontall magnets;

While applicants invention has ior` convenience been applied to aparticular type oi" automatic ktelephone system such asl disclosed, forexample, in the patent to Si. B.

lli/williams, Jr. No. 1",t l"7,331',V issued Dec. Q,

19%,.it is to he understood. that it is equally applicable to othertypes of systems.

In the system disclosedk the subscribers iine 100 extends to thecentra-l office `and there terminates in a line switch 10'12diagrammatical'lyshown. The' line switch 102 is adapted to extend thesubseribers iine 100. to any of a number of trunlisyoneoi which 104.',105. is illustrated extendingto a irst selector switch 106. Such switch106 may be of thesame character as thel line switch 102 andservestoxextend the incoming trunk 104,105 to other trunks such as11e/i2, 143iA andfv 144. Obviously vtrunks 142, 14:3 and` vll'fi mayleac to succeeding selective devices where they may be selectivelyvconnected to other trunks andI so on unti-li the desired connection iscompleted".

Also located at the central oiiice is an impulseI receiving andrecord-ing` mechanism be any desired number of these-recording;

mechanisms arranged to serve a group of subscribers lines, theparticular one to be taken for use at any particular time depending uponits busy or idle condition. A selecting switch 1 03 is provided forassociating an idle one I of the recording` mechanisms comprising theremainder of Figs. 1 and 2, with the particular trunk 104, 105 to whichthe calling subscriber-s line has been extended by the switch 102.

The switches 102, 103 and 106 may be of the general type shown anddescribed in detail in the patent to C. L.-Goodrum, No. 1,551,024,issued August 25, 1925, or o any well-known type such as power drivenselectors, or switches in which multi-contact relays are employed forbuilding up the connections with means for selectingy and operating thenecessary relays. vllhile the recording and registering mechanismembodying the invention is particularly adapted for use in systemsemploying switches of the character illustrated, it is to be understoodthat any other suitable form of switching device may be used instead.

The registering mechanism shown in Fig. 2 may also be of the samegeneral type and operate ina similar manner to the switching device,described in the hereinbefore mentioned patent to C. L..Goodrum. Havingdescribed the apparatus to be employed and the generalmode of itsoperation, a detailed description will now be given. of the operation ofthe system. It y will ,be` assumed that the calling subscriber 100desires to obtain connection with a line whose otfice'and numericaldesignation is BIN M35-1V, and to initiate a call, re-

moves his receiver from the switchhook. lNhen the receiver is thusremoved, the line switch 102 operates to extend'the calling line fto anidle trunk 104, 105. Moreover, the selecting'switch 103 operates toassociate f the idle recording mechanism shown in detail withtheselected trunk 104, 105. In response to these operations a circuit isclosed from battery through resistance 112, .right winding ot impulserelay 111,

vthrough the switch 103, conductor '105,

through ythe Vswitch 102, over the Vloop of the calling line 100 andreturning through the switch 102, conductor 104, through the switch 103,left winding of the balancing coil'113 to ground. Relay 111 operates andcloses a circuit from ground through its armature and front contact,winding of slowto-release relay 115 to battery causing the operation ofrelay 115.

armatures a circuit is closed from battery,

left winding of relay 119, inner left contact of relay 119, o uter rightback contact of relay 121 and outer left back contact of relay 122, inparallel, outer right back contact of relay 122outer right back contactof relay 123, outer right back contact of relay 124, outer left frontContact of relay 125, windings ot relay 121 in series to ground. Thiscircuit is not eiifective toenergize relay 121 at this time due to thedirect connection in shunt of the windings oit relay 121 to ground atthe front contact of relay 111. Nothing further occurs until the callingsubscriber manipulates his dial in response to the dialing tone which isinductively transmitted over theV dialing circuitJ above traced from theright winding of balancing coil 113.

Then the subscriber operates his dial 101 to send the impulsescorresponding to the rst code letter B of the office designation of thewanted line, thefletter having a digit value of 2, the circuit of relay111 is opened twice causing relay 111 to deenergize and energize twicein succession. When relay 111 deenergizes it opens the circuits ofrelays 119 and 115. Relay 115 being slow-torelease maintains itsarmatures attracted during the interruptions fof its circuit. Vhen,therefore, relay 111 closes its'bacl; contact, a circuit is closed fromground, back contact of relay 111, right contact of vrelay 115, windingolf relay 118 to battery.

Relay 11S operates and at its lett armature opens the initial energizingcircuitv above traced for relay 125. At its right armature relay 118closes a circuit from ground, right front contact of relay 118, innerlett contact of relay 114 to battery through the winding of relay^117.VRelay 117 energizes and .closes a locking circuit for itself frombattery through its winding, inner left contact of relay 114 to ground,at the inner left front contact of relay 117. left armature relay 117also opens the initial energizing circuit of relay 125 at another Ipoint.

Meanwhile, relay 119 whose originalenergizing circuit was opened whenrelay 111 retracted its armature is maintained energized over thecircuit previously traced for relay. 121.L The shunt around this lrelayhaving now been removed, relay 121 attracts its armatures closing alocking cir- At its outer cuit tor itself through its right winding andinner right front contact to battery on: conductor 133.r This circuitshunts theoriginal energizing circuit through relay 119 and relay 119thereupon deenergizes. Ait its outer left contact relay 119 connectsground to the circuit of relay 118 supplementing the ground freni theback contact of relay 111, thus shortening the open circuit period* overwhich relay 118 must hold its armatures attracted.

Relay 121 also closes a circuit from ground, right winding ot relay 119,inner lett Contact oi relay 121,. left winding of relay 125, inner rightiront contact of relay 125, conductor 133let`t back contact ot relay11a, resistance 120 to battery. The current in this circuit flows in theopposite direction to the original energizing current ilowing throughthe lett winding. The windings of relays 125, as well as those oi theother counting relays, are so wound that these opposing currentsneutralize one another and relay 125 retracts its armatures. The othercounting relays operate in a similar manner, that is, they operatethrough their two windings in series, locl; through one winding andrelease due tov differential current through their two windings. Thecurrent inthe above traced releasing circuit has a diiii'erentialel'lect upon the lett winding of relay 119 causing that relay to releasemore quickly than it otherwise would. The magnetic etl'ect o1 the rightwinding is not sufficient to reenergize the relay nor materially hinderits energization when the lett winding again becomes effec*- tiye. vWhenrelay 111 attracts its armature at the end ot the first interruption ofits circuit, the energizing circuit for relay 119 is again closed andthis relay operates. A circuit is now closed from grounded battery, lettwinding of relay 119, inner lettfront Contact of relay 1.19, outer rightfront contact otr-clay 121 and in parallel through the outer right andlett bacl; Contact of relay 122, thence through the outer' right backcontact of relay 123, outer right back contact of relay 124, outer leftback contact of relay 125, through the two windings of relay 122 toground. Relay 122 is shunted by direct ground at the armature and frontcontact of relay 111 at this time and does not attract its armatures.

lVhen relay 111 retracts its armature in response to the second and lastinterruption et its circuit by the dial 101, the shunt around relay 122is removed and that relay attracts its armatures. At its inner rightfront contact relay 122 establishes a locking circuit from groundthrough its right winding to batt-ery over conductor 133, this circuitshunting relay 119 and that relay retracting its arniatures.

Relay 122 also closes a circuit through the right winding ot relay 119,inner lett front Contact of relay 1122, left winding ot relay 121i,inner'right armature ot relay 121 to battery over conductor 138. Thiscircuit places the Wind-ings of relay 121 in opposition so that relay121 thereupon releases.

At the close of thevsecond opening ont'- they circuitof relay 111 thatrelay again operates causing, in turn, the operation of relay 1.1191 andthe closure of a circuit tor relay 123 which circuit is ineffective dueto the shunt closed at the front contact of relay 111. lt is to benot-ed inr` connection with the foregoing description of the operationot' relays 117 and 125v that relay 125 releasesy prior to the operationot relay 117` so that the circuit which would` otherwise exist foroperating relay 126 is not at this time effective; The circuit ot relay111 is maintained for a comparatively long time between the sendingV ofthe first and second digit series oi' impulses and; relay 119 beingenergized ground. is removed from the circuit ot relay 118 long enoughto permit that relay te retract its armatures. Relay .118 ondeenergizing. closes a circuit from ground at its right backcontact,louter lett contact oft relay 111, inner right contact of relay117, back Contact ot' relay 148, left back Contact of relay 126, outerlett back contact of relay 124", outer left back contact of relay 121,conductor 1337, Vertical bar magnet 202 to battery. Magnet 202 attractsits armature, rotates the vertical bar ot the registering mechanismassociated therewith, and establishes a circuit fromV ground at itsarmature contact over conductor 205, inner right baci: contact oftransiter relay 207 to battery through the winding of horizontal barmagnet 200. Magnet 206 energlzes in this circuit closing` a lockingcircuit for itself ex-` tending through its Winding and the winding ofrelay 207 in series, the outer liront Contact oit' magnet 206,.conductor 1415 to ground at the left contact ot relay 115. vlilclay 207being shunted by direct ground at thearmature Contact ot magnet 202 doesnot energize at this time. li/agnet 206, upon energizing, alsorotatesthe horizontal bar associated' therewith, which in conjunction with theoperated Vertical bar operates the card 222 located at the junction otthe two operated bars, in the well-known manner.

lli/ith counting relay 122 energized a circuit is also closed which maybe traced trom ground at the front contact ot relay 111, inner'lettfront contact of relay 119, lett front Contact of relay 122, conductor14:7, inner normal contacts oiE the preliminary pulse relay 200, windingof relay 200, conductor 1415 to ground atthe lett contact of relay 115.Relay 200 energizes and locks over the alternate Contact of its innerlett armature, conduct-or 1341, resistance 120 to.

vroe y the sender is dismissed and at its outer left front contact joinsconductor 138 to the conductor 223 leading to the Vertical magnet 201.

In this connection it is to be noted that the Vertical magnet 201 is notoperable until after at least two impulses have been recorded on thecounting relays. For eX- ample, if a single impulse is recorded in thefirst digit series, then at the end of the series only the countingrelay 121 remains energized and since the counting relay 122 has notenergized, the circuit previously traced for relay 200 has not beencompleted. Therefore, when relay 118 deenergizes upon the termination ofthe single impulse, the circuit previously traced from ground at theright back Contact of relay 118 to the outer left armature of relay 121extends over the front contact of this armature, conductor 188, theouter back contact of relay 200, conductor 135 to battery through thewinding of relay 114. Relay 114, thereupon, energizes opening theholding circuits of counting relay 121 and relay 117. These relaysthereupon release. Thus, if only a single impulse is received in thefirst digit series, no magnets of the registering mechanism areoperated. The circuits are designed to function in this manner in orderthat a false registration may not result from' an initial preliminaryimpulse resulting from conditions existing on the line when it is cutthrough to the recording circuits, or resulting from the acciecntaloperation of the switohhook at the substation.

As soon as magnet 206 operates following the recording of the first`code letter, a circuit is also closed from battery, winding of relay114, conductor 185, `left baclr contact of transfer relay 207, innerfront contact of magnet 206, conductor 145 to ground at the left contactof relay 115. Relay 114 energizes opening the holding circuit of relay117, and at its right back contact opens the locking circuit of countingrelay 122. As soon as the relay 117 deenergizes the circuit previouslytraced for magnet 202 is opened permitting the restoration of theoperated vertical bar. lith magnet 202 deenergized the shunt around thewinding of transfer relay 207 is removed and relay 207 energizes in theholding circuit of magnet 206. Relay 207, upon energizing,opens thecircuit of relay 114 which thereupon releases. The operated card 222 isnow held operated by the horizontal bar which was operated by magnet206. r1`he recording and registering circuits are new in condition forthe receipt of the second series of impulses.

As it has been assumed that the second code letter is l having anumerical equiva-l lent of 4, the subscriber now manipulates his dial101 to cause four circuit interruptions of his line circuit. lV ithrelays 118, 117 and 114 deenergized and relays 111 and 119 energized,the above traced circuits for operating relay 125 and preparing relay121 for operation are completed. In response to the iirst interruptioncaused by the dial 101, relay 111 releases its armatures and relays 118,1.17 and 121 operate. Relay 121 locks and closes the differentialcircuit for releasing relay 125. In response to the second interruption,relay 122 operates and causes the differential release of relay 121 asbefore described. In response to the third interruption relay 123 isoperated over a circuit extending from batter left winding and innerleft contact of relay 119, outer right back contact of relay 121, outerright front .Contact of relay 122 to ground through both windings ofrelay 128. Relay 123 energizes and locks from ground through its rightwinding and inner right contact to battery on conductor 133, therebycausing the differential release of relay 122. In response to the fourthinterruption, relay 124 is oper-l ated over a circuit extending frombattery, left winding and inner left contact of relay 119, outer rightback contact of relay 121, outer right back conta-ct of relay 122,louter right front contact of relay 128 to ground through both windingsof relay 124. Relay 124 thereupon energizes and locks through its rightwinding and inner right contactto battery on conductor 138, therebycausing the differential release of relay 128.

Relayv 117 having operated following the energization of relays 118 and125, when, therefore, the second digit series of interruptions ceasesand relay 118 deenergizes,v with counting relay 124 operated and theremaining counting relays deenergized, a circuit is closedrfrom groundat the right back contact of relay 118, the outer left back contact ofrelay 114, the inner right front contact of relay 117, the back contactof relay 148, the left back contact of relay 126, the outer left frontcontact of relay 124, conductor 189 to battery through the verticalmagnet 203 of the registering mechanisin. Magnet 208 operates thevertical bar associated therewith and at its armature contact connectsground to conductor 205. A circuit is new established for the horizontalbar magnet 208 extending from ground on conductor 205, the inner rightarmature and front contact of relay 207, the inner right back contact ofrelay 209 to battery through the winding of horizontal magnetV 208.h'lagnet 208 thereupon energizes locking itself in series with transferrelay 209 over a circuit extending from battery, winding of magnet208,winding of relay 209, outer front contact of magnet 208 to ground atthe outer right contact of relay 207. vRelay 209 does not, however,operate in this locking circuit since it is shunted at the contact ofmagnet 208. Magnet 208, upon energiz- Cil 'leasing ,the operatedVertical bar.

ing, rotates the horizontal ybar associated therewith, which inconjunction with the vertical bar operated by magnet 203 operates theregistering card 224 `located at the junction ot these two bars. 1naddition magnet 208 at its outer contact closes a circuit for :rela-y114 vextending from battery, Winding of relay 114, conductor 135, leftfront contact of relay 207, lett back contact of relay 209, .armatureand contact ot `inagnet 203 to ground `at the outer right front contactof relay `207. -elay 114 energises and functions .as betere 4to releaserelay 117 and the operated counting relay 124. As soon as relay 117deenergizes the operating circuit `et magnet v203 is opened thereby re-The release o1i `magnet 203 .also removes the shunt from the Winding ottransfer relay 209 which `thereupon energizes .in the locking circuit otmagnet 208 opening at its left back contact Vthe circuit ot relay 11.4.The operated card 224 `is new held operated by the bar which wasoperated by .magnet 208. The recording and registering .circuits are newin condition to receive the third series et impulses.

The subscriber next operates .his dial 101 to interrupt `thecircu'it'otlrelay 111 siX times in accordance with the 4third ycode vletter whichwas assumed to be M. At the end ot the fourth circuit interruptionrelays 118, 117 and the .counting relay 124 are all Iin an v energizedcondition as described .in connection with the preceding digit seriesand an energizing circuit is prepared through `the operation of relay124 .for the counting relay 125. Upon the .ii'fth interruption relay 125energizes kover a circuit from battery throughthe 'left Winding .andinner left armature contact of relay 119, the outer right back contactot' `relays 121, 122 .and 123, the outer right front contact of relay124 to ground through .both Vwindings of .relay 125. Relay 125 thereuponlocks from ground through its inner right tront'contact to battery onconductor `133and closes a circuit through the left Winding ot relay 124for causing it Yto be diierentially released. Relay 125 at its'outer'right Contact also closes a circuit from ground at .the outer rightcolltact et relay 117, outer right contact ,et re- 'lay 125, right backcontact `of relay 127 to battery through the Winding of relay 126. Relay12G1energizes'and closes a locking Cir-- cuit for itself extendingthrough itswinding and the winding oft' relay 127, the right :con-

ztact oi' relay 126 `toV ground at the outerright contact ot relay 1.17.ARelay 127 however, does not `energize in 4the .locking circuit or"relay 126 since it is `shunted by direct ground connected throughtheouter .right contact ot relay 125.

In response to .the lsixth rand last interruption ot thecircuit ot relay111, a circuit iscstablished from battery left Winding and inner lettContact of relay 119, outer right back contact et relays 121, 122, 123and 124, outer lett `liront Contact of relay 125 to ground through thewindings of relay 121 in series. Relay 121 thereupon energizes andyloclrs from lground over its right Winding and inner right contact tobattery on conductor 133 and at its inner left front contact Vcloses thepreviously traced circuit through vthe lett Winding ot relay 125causrelay 125 -to be differentially released. rssoon relay 125deenergizes the shunt around relay 127 is opened whereupon relay 127energizes `in the holding circuit ot relay 123. i l

At the termination oit the sixth and last impulse oit the third series,,relay 113 reH leases and `With relay 121 energi-ied and the remainingcounting relays deenergized,v

circuit is closed from ground at the right baclr contact oit relay 1.18,theouter leitt back contact ot relay 114, the inner right contact oitrelay 117, the back Contact of relay 143, the lett trent contact ofrelay 126, the inner lett front contact oit relay 127, the .outer lettback contact ot relay 124, the outer lett trent contact of relay 121,conductor 133, the outer lett -iront `contact ot relay 200, conductor tobatteryV through the Windingl Voi? Vertical magnet 201. ,11 second cir.-cuit is also .closed from ground at the baci; contact ot relay 118, over`the circuiL traced to the inner lett `front VContact ot relay 127,outer lett trent contact oft relay 127, conductor 140, magnet 204 tobattery. These magnets 201 and 204, upon energizing', operate theVertical bars associated therewith and at .theirv armature contactsconnect ground to the conductor 205 for the purpose ot energizing the`horizontal magnet 210. The circuit ot magnet V210 extends troniconductor 205, through the inner right front contacts ot' relays 207 and209 and the inner right back Contact ot relay 211 to battery throughthe` Winding` et magnet 210. Magnet 210, upon operating, rotates theassociated .horizontal barand locks itselt through the Winding ottransler relay 211. Magnet 210 also causes the operation et relay 114 aspreviously described, `which in turn, releases `relays 117 121, 126 and1.2l7 As soon as .relay 117 releases, fthe operating circuits otmagnets201 and 204 are opened and these `magnets permit the restoration ot theoperf 'ated Vertical bars. 1N ith these magnets deenergized thetransi'er relay 211operates in the holding circuit ot magnet 2,10opening the circuit et' relay 114.. rThrough the conjoint operation etthe operated vertical and horizontal. kbars the registering cards 225and 225 are operated andare ymaintained operated solely through theoperation oi magnet 210 after the release off magnets 201 and' 204. rlherecording and registering circuits are now in condition to receive andregister the fourth or thousands series of impulses.

The subscriber next operates his dial 101 to interrupt the circuit ofrelay 111 once, the thousands digit being assumed to be 1. At the end ofthe first circuit interruption, relays 117 118 and 121 arein anenergized condition as described in connection with the preceding digitseries. Since only a single circuit interruption results from dialingthe thousands digit 1, the relay 111 remains energized following thisinterruption and relay 118 deenergizes, closing a circuit extending fromground at its right back contact, outer left back contact of relay 114,inner right contact of relay 117, back contact of relay 148, left backcontact of relay 126, outer left back Contact of relay 124, outer leftfront contact of relay 121, conductor 188, outer front contact of relay200, conductor 223 to battery through the winding of vertical magnet201. Magnet 201 operatesk the vertical bar associated therewith and atits armature contact closes a circuit over conductor 205, the innerright front contacts of relays 207, 209 and 211, the inner right backcontact of relay 213 to battery, through the horizont-al magnet 212.Magnet 212 thereupon rotates the horizontal bar associated therewith,locks itself through the winding of relay 213 and closes the circuit ofrelay 114. Relay 114, upon energizing, opens the circuits of relays 117and 121, whereupon magnet 201 is released. Through the conjointoperation of the magnets 201 and 212, the registering card 227 isoperated, this card being held operated through the continued operationof magnet 212 following the release of magnet 201. As soon as magnet 201releases, the shunt around transfer relay 213 is opened and this relayenergizes in the holding circuit of magnet 212, opening the circuit ofrelay 114. The recording and registering circuits are now in a conditionto receive and register the fifth or hundreds series of impulses.

The subscriber now manipulates his dial 101 to interrupt the circuit orrelay 111 ten times to record the hundreds digit 0. At the end of thesixth linterruption yrelays 117 118, 121, 126 and 127 are in anenergized condition as described in connection with the third digitseries. In a similar manner in response to the seventh, eight, ninth andtenth circuit interruptions, relays 122, 123, 124 and 125 energize -insuccession each in turn causing the deenergization of the counting relaypreceding it. Thus at the end of the tenth interruption relay 125remains energized and locks, while the remaining counting relays are alldeenergized. As soon as relay 125 energizes it establishes a circuit forrelay 148 extending from battery through the winding of relay 148, righttact of relay 125 to ground at the outer right contact of relay 117.When relay 111 remains energized at the end of the digit series andrelay 118 deenergizes, no circuits are established for vertical magnetsof the registering mechanism, but a circuit is established from groundat the right back contact of relay 118, outer left back contact of relay114, inner right contact of relay 117, front contact of relay 148,conductor 141, inner right front contact of transfer relays 207--213,inner rightback contact of relay 215 to battery through the winding ofmagnet 214. Magnet 214 operates locking itself in series with thetransfer relay 215 and closing the circuit of rela-y 114. Since novertical bars have been operated, the operation of the bar associatedwith magnet 214 is without effect on the register- Iing cards associatedtherewith. Following the energization of relay 114, relays 117, 126,127, 148 and 125 deenergize. As soon as relay 148 deenergizes the shuntwhich has existed around the winding of transfer relay 215 is opened andrelay 215 energizes in the holding circuit of magnet 214, in turn,opening the circuit of relay 114. The recording andrregistering circuitsare now in a condition to receive and register the sixth or tens seriesof impulses.

The subscriber now operates his dial 101 to interrupt the circuit ofrelay 111, three times to record the tens digit 3. At the' end of thethird interruption, relays 117, 118 and 123 are in anenergized conditionas previously 'described and when relay 111 remains energized at thetermination of the digit series and relay 118 deenergizes, circuits areestablished for Vertical magnets 201 and 202. The circuit of magnet 201may be traced from ground at the right back contact of relay 118, thenceas previously traced through the outer left back contact of relay 124,the outer left front contact of relay 123, conductor 138, the outer leftfront contact of relay 200, conductor 223 to battery through thevertical magnet 201. The circuit of magnet 202 may be traced from theouter left back contact of relay 124, the outer left back contact ofrelay 121, conductor 137', to battery through the vertical magnet 202.Magnets 201 and 202, upon energizing,=cause the operation of thevertical bars associated therewith and establish a circuit overconductor 205 for the horizont-al magnet 216 in a manner hereinbeforedescribed in connection With the operation of other horizontal magnets.

Magnet 216, upon operating, locks itself l through the winding oftransfer relay 217, rotates the horizontal bar associated therewith andestablishes a circuit for the relay 114. Relay 114, upon'energizing,releases relays 117 and 123, whereupon the operated vertical magnets 201and 202 are released,`

releasing the operated vertical bars and permitting `the energization oftransfer relay 217. '.lhrough the conioint operation oi the vertical and`horizontal bars, the cards 228 and 220 are operated, these cards eingmaintained operated following the release oli the vertical bars, throughthe continued operation oit the horizontal `magnet lith relay 219operated the circuit oi relay 111 is `opened and relay 111 deenergizes.The recording and registering lcircuits are now in vcondition to receivethe seventh or units series ot impulses.

The subscriber new operates his dial 101 to interruptthe circuit ofrelay 111 live times to record the units digit At the end of the iifthinterruption, relays 117, 113 and are in an energized conditionhereinbetore described. Upon the termination et the ifth and lastimpulse, with relay 1253 energized, a circuit is vestablished fromground at the outer right contact of relay 117, 4the outer right contactot relay 125, "the right back Contact or relay 127 to battery throughthe Winding oi relay 120. lle- `lay 126 energizes, locking itselithrough the Windingfoi relay 127 and its own right con- 'tact kto groundat the louter right Contact ot relay 117. Relay 12E/'does not, however,energize in this locking circuit so long as relay 125 remains energized.lllllien .relay 111 remains energized at the termination oi' vthe seriesof impulses and relay 118 deenergizes, a circuit is establishedextending from `the right baclr contact of relay 113, thence aspreviously traced to the leit armature and front contact ot relay 126,the inner left baclr contact ot relay 127, conductor 110 to batterythrough the Winding ot vertical magnet 201. ltlagnet 201, uponenergizing, operates the vertical bar associated therewith andestablishes a circuit over conlductor 205 'for the horizontal magnet 213in #the manner previously described in connection .with circuits ofother horizontal magnets. Magnets 213, upon energizing` operates `theassociated horizontal bar, which `in conjunction with the operatedvertical bar, causes the operation ot the registering card 230. Inaddition magnet 213 loclrs itself through `the Winding of transier relay219and closes a circuit for energizingreiay 111. Relay 111, uponenergizing, opens the Vholdingcircuits ot relays 1,17, 125 and 120,

-Whereupon `these relays release, relay 117, in turn, openingtheenergizing circuit ot ven tical magnet201. hrlagnet 201,1.upondoenergizing, lpermits the restoration oi the operated vertical bar andpermits the ener- `gization ot the transfer relay 210, which u ponoperating, yopens the circuit ci relay 111. The recordingl andregisteringv circuits arenow in condition to receive and register i vthelast .or stations series of impulses.

The subscriber now manipulates his dial 101 to interrupt thecircuit otrelay :111 nine times to record the stations .letter 17V. At the end ofthe ninth interruption, relays 1117, 118, 121, 1261and 127 are in anenergized condition as previously describechand when relay `111 remainsenergized at the termination ofthe digit series and relay 118deenergi-zes, circuits are established for the vertical magnets 203 and201. rllhe circuit tor magnet 203 may be traced from ground at the rightarmature and baclr contact of relay 113, thence as previously Itracedthrough the left front contact of relay 126, inner lett front Contact ofrelay 127, the outer left front contact oi relay 121, conductor 139,thence to battery through the winding of magnet 203. rlhe circuit tormagnet 201 may be traced irom the inner lett armature and 'iront Contactet relay 127, through the outer lett front contact out relay 127,conductor 110, and thence to battery through the winding of magnet 201.Magnets 203 and 201, .upon energizing cause the operation oi" theassociated vertical bars and also the operation of horizontal magnet 220in a manner hereinbetore described .in connection With the operation ofother horizontal magnets. hlagnet`220, upon energizing, operates 4theassociated horizontal bar, locks Aitf self in series With `transier'relay 221 and establishes the previously traced circuit `for relay 111.Relay 111, upon energizing, opens the circuits of relays 117, 126, 127and 121. Relay 117 upon deenero'izing, opens the previously tracedcircuits ot magnets 203 and 201. As soonas `magnets 203 and 201deenergize, the operated vertical bars are released and the 4transferrelay 221 energizes opening the circuit of relay 111. The conjointoperation ot the operated vertical and horizontal bars causes theoperation ot registering cards 231 and 232, which cards are vmaintainedin their `operated condition by the magnet 220, following thedeenergization of magnet-s 203 and 201. The entire orlice land numericaldesignations yo't the Wanted line number have now been registereduponthe registering mechanism.

'In the foregoing description, the regilstra- 1 tion et all digitsexcept digits 7 and 8 have been described. l/Vhen the digit 7 is dialed,upon the termination of the circuit inter- 'uptions, relays 117., 126,127 and 122 are in an energized `condition and, thereforev conductors137I and 110 are grounded to operate'the verticalA magnets 202 and 201,thus operating the second and tour h registering cards ot' thehorizontal row oi cards corresponding to the digit series being dialed.lllflhen the digit 8 is dialed upon the ter nination ot the circuitinterruptions relays 117, 120, 127 and 123 are in an energized condtionand therefore conductors 137, 138 and 110 are grounded to operate thevertical magnets 201, 202 and 204, thus operatingthe first second andfourth cards of the horizon tal row corresponding to the digit seriesloeing dialed.

Upon the completion of the registration ot' the entire o'lice andnumerical designa tions ot the wanted line, a district marker isassociated with the upper three groups ot registering elements ot' theregistering mechanism and a line marlrer with the live lower groups ofregistering elements over the groups oit conductors extending to theright margin of the ligure, if thecall is of a full mechanical class. Itthe call is of a class in which connection must be established to thewanted line through a call indicator position of a manual oiiice, all otthe groups of registering elements are connected with the relay callindicator impulser ot the sender over the groups of conductors extendingfrom the lett of the several groups of registering` elements. rlhedistrict line markers and the call indicator impulser (not disclosed)may he associated with the registering mechanism in the manner set forthin the aforementioned patent to S. B. lVilliams, Jr. i

For example, when the district marker is in condition to be operated inaccordance with the otlice code registered upon the registeringmechanism, a connection is eX- tended 'to the conductor 233 whichextends as stated in parallel to the grid wires 234, 236 and 238.Through the operation of the card 222, the grid wire 234, is connectedto the marker wire`235; the grid wire 236 through the operation of card224 is connected to the marker wire 237; and the grid wire 23S throughthe operation of cards 225 and 226 is connected to the marker wires 239and 240. Similarly, when the line marker is in readiness to be operatedin accordance with the numerical registrations of the registeringmechanism, the wire 241 is connected in parallel to the grid wires 242,264, 245, 248 and 250. rlhe grid wire 242 through the operation ot card22T is then connected to marker wire 243. Grid wire 264, in thisinstance, is without connection to any marker wire ot the group 244,since the hundreds digit was Zero. `The grid wire 245 is connectedthrough the operation ot cards 228 and 229 to marker wires 246 and gridwire 248, through the operation of card 230 is connected to the markerwire A249 and grid wire 250 through the operation `the sender the secondand third grid wires associated with each group of registering cards,which are respectively connected to battery through a high resistanceelement 255 and a low resistance element 254, are connected selectivelywith marker wires e);- tending to the call indicator impulser. Forexample, marker wire 256 of the group 253 is Vconnected through thelower contact of card 222 to grid wire 265; marker wire 258 is connectedthrough the second contact ot .card 224 to grid wire 266; marker wire260 is connected through the second contact of card 225 to grid wire 261and marker wire 263 is connected through the lower Contact of card 226to grid wire 262., and so on for the remaining 'groups oit registeringelements.

Att-er the markers have been set circuits may he closed in the mannerfully set forth in the aforesaid patent to- S. B. lVilliams, Jr. fordetermining the selective operation ot the switches such as switch 106.For example, the trunks 142, 148, 144, etc. which may representdifferent numerical groups may he controlled by magnets or relays 108,109, 110, etc. under the control of the markers. 1When the connectionhas' been completed up to sucha point that the recording and registeringmechanism is no longer required, the circuit ot relay 111 is maintainedopened permitting the release ot relay 115, which at its left contactremoves ground from the conductor 145, releasing all operated horizontalmagnets 206 220 and the operated transfer relays 207-# 221. Upon therelease ot magnets 20G-220, the horizontal hars et the registeringmechanism are released, permitting the operated registering cards torestore to normal condition'and open the circuits which have beenestablished. All apparatus of the recording and registering mechanism isnow in normal condition. F rom this point, the connection from thecalling line is established and released in the well-known manner.

What is claimed is:

1. ln a. switching system, a plurality of switching devices coordinatelyarranged in rows, a plurality of selecting bars individual respectivelyto rows of devices in one coordinate direction, a plurality of operatinghars individual respectively to rows of devices in the other coordinatedirection, means :tor selectively operating said selecting hars, andmeans for operating one or more o't the devices in a row associated withan operating bar through the'conjoint operation of one or more orn saidselecting hars undone of said operating bars.

2. In a switching system, a plurality of switching devices coordinatelyarranged in rows, a plurality of selecting bars individual respectivelyto rows of devices in one coordinate direction, a plurality of operatingliars individual respectively to rows of devices in the other coordinatedirection, means for selectively operating said selecting bars, andmeans vfor successively operating' one or more of the devices in each ofthe rows ot' the last named coordinate direction through the repeatedand conjoint operation of one or more of said selecting bars withsuccessive ones of said operating bars.

In a switching system, a plurality of switching devices coordinatelyarranged in rows, a plurality of selecting bars individual respectivelyto rows of devices in one co ordinate direction, a plurality ofoperating bars individual respectively to rows of devices in the othercoordinate direction, and means for successively operating varylingcombinations of the devices in each of the rows of the last namedcoordinate direction through the repeated simultaneous operation ofvarying combinations of said switching bars with successive ones of saidoperating bars.

a. In a telephone system in which connections are established inaccordance with the designations of desired connections under thecontrol of a central oiiice sender, a unitary registering mechanismindividual to the sender for registering all digits of complete calldesignations, comprising a plurality of groups of registering elem-entsfor registering respectively the several digits of call designations andmeans less in number than the numerical value of the largest digit to beregistered for selecting elements of any group.

5. In a telephone system in which connections are established inaccordance with the designations of desired connections under thecontrol of a central oiice sender, a unitary registering mechanismindividual to the sender for registering all digits of complete calldesignations, comprising a plurality of groups of registering elementsfor registering respectively the several digits of call designations,means less in number than the numerical value of the largest digit to beregistered for selecting elements of any group, and means individualrespec tively7 to the several groups of elements and successivelyoperating in conjunction with said first means for operating theselected elements of said groups.

6. In a telephone system in which connections are established inaccordance with the designations of desired connections under thecontrol of a central oiiice sender, a unitary registering mechanismindividual to the sender for registering alldigits of complete calldesignations, comprising a plurality of groups of registering elementsfor registering respectively the several digits of call designations,means repeatedly operated in response to successive digits to beregistered for successively selecting elements of said several groups,and means individual respectively to the several groups of elementsresponsive to successive digit series and operating successively inconjunction with said iirst means for operating selected elements ofsaid groups.

7. In a telephone system in which connections are established inaccordance with singly or in combination for selecting one or moreelements ot any group.

8. In a telephone system in which connections are established inaccordance with the designations of desired connections un* der thecontrol of a central othce sender, a unitary registering mechanismindividual to the sender :tor registering all digits of complete calldesignations, comprising a plurality of groups of registeringv elementstor registering respectively the several digits oi call designations,means less in number than the numerical value of the largest digit to beregistered operating singly or in combination for selecting one or moreelements of any group, and means individual respectively to the severalgroups of elements and successively operating in `conjunction with saidiirst means for operating the selected elements of said groups. l

9. In a telephone system in which connections are established inaccordance with the designations of desired connections under thecontrol of a central oiiice sender, a unitary registering mechanism forthe sender for. registering all digits of complete call designations,comprising a plurality of groups of registering elements coordinatelyarranged in rows, a plurality of selecting bars individual respectivelyto rows o elements in one coordinate direction, a plurality of operatingbars individual respectively to rows of elements in the other coordinatedirection, means for operating said selecting bars singly or incombination in re- -sponse to each digital` series of impulses to beregistered, means for successively operating said operating bars inresponse to successive series of impulses, and means jointly controlledby said selecting and operating bars for operating said registeringelements.

In witness whereof, I hereunto subscribe my name this 16th day ofOctober A. D.,

`OWEN C. FROM.

